hi.
just wondering how old a rifle has to be ,to be "collectable"
I aquired a Diana Mod 38 "FireBird" the other day, its a German one and the date stamp is 11 90.
are these collectable? the wood work has a few light marks/scratches, the metal work has very good blueing,nice and dark,
there is just the beginings of slight rust on the barrel where there was a sling attached to a barrel clamp.
any ideas of value?

thanks for any info.
ecm